Pup, I shoot the selects for 3-D. I don' t think you can actually see the difference between the CX' s .003 or the Selects.001. The reason I shoot the Selects is only because of my own psychye. The only thing I found is last year some of my arrows had split or cracked at the nock. So this year I installed a uni-bushing and the g-nocks. So far this saved me three arrows when getting by another arrow at the nock. The g-nock broke and all I did was replace it with no damage to the arrow. JERRY